Παραπομπή σε μορφή APA (7η εκδ.)

Frey, J., & Howard, B. (1987). AN ACCURATE CALCULATION OF THE GROUND-STATE ENERGY OF THE HELIUM ATOM AND THE HYDROGEN NEGATIVE-ION USING HYPERSPHERICAL COORDINATES.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Frey, J., και B. Howard. AN ACCURATE CALCULATION OF THE GROUND-STATE ENERGY OF THE HELIUM ATOM AND THE HYDROGEN NEGATIVE-ION USING HYPERSPHERICAL COORDINATES. 1987.

Παραπομπή σε μορφή MLA (9th εκδ.)

Frey, J., και B. Howard. AN ACCURATE CALCULATION OF THE GROUND-STATE ENERGY OF THE HELIUM ATOM AND THE HYDROGEN NEGATIVE-ION USING HYPERSPHERICAL COORDINATES. 1987.